On 2017 June 8 at 02:01:16.49 UTC, a gravitational-wave (GW) signal from the merger of two stellar-mass blackholes was observed by the two Advanced Laser Interferometer Gravitational-Wave Observatory detectors with a network signal-to-noise ratio of 13. This system is the lightest black hole binary so far observed, with component masses of 12+7 -2M⊙+2-2M⊙ (90% credible intervals). These lie in the range of measured black hole masses in low-mass X-ray binaries, thus allowing us to compare black holes detected through GWs with electromagnetic observations. The source's luminosity distance is 340+140 -140 corresponding to redshift -0.07+0.030 03. We verify that the signal waveform is consistent with the predictions of general relativity.
B. P. Abbott et al., "GW170608: Observation of a 19 Solar-mass Binary Black Hole Coalescence," Astrophysical Journal Letters, vol. 851, no. 2, Institute of Physics - IOP Publishing, Dec 2017.
The definitive version is available at https://doi.org/10.3847/2041-8213/aa9f0c
Keywords and Phrases
Binaries: general; Gravitational waves; Stars: black holes
International Standard Serial Number (ISSN)
Article - Journal
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